added reordering, refactored mixins

src/mixins/CommonWidgetGeneratorMixin.py

@@ -0,0 +1,78 @@
+# Python imports
+import pathlib
+
+# lib imports
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk
+
+# Application imports
+
+
+class CommonWidgetGeneratorMixin:
+    def _create_spinbutton_widget(self):
+        spin_button = Gtk.SpinButton()
+        spin_button.set_numeric(True)
+        spin_button.set_wrap(True)
+        spin_button.set_digits(0)
+        spin_button.set_increments(1.0, 1.0)
+        spin_button.set_range(1, 1000000)
+        spin_button.set_sensitive(False)
+
+        return spin_button
+
+    def _create_combobox_widget(self, data):
+        cell  = Gtk.CellRendererText()
+        store = Gtk.ListStore(str)
+
+        for row in data:
+            store.append([row])
+
+        combo_box  = Gtk.ComboBox()
+        combo_box.set_model(store)
+        combo_box.pack_start(cell, True)
+        combo_box.add_attribute(cell, 'text', 0)
+        combo_box.set_active(0)
+
+        if self._has_method(self, "_combo_box_changed"):
+            combo_box.connect("changed", self._combo_box_changed)
+
+        return store, combo_box
+
+    def _create_treeview_widget(self, title = "Not Set"):
+        scroll = Gtk.ScrolledWindow()
+        grid   = Gtk.TreeView()
+        store  = Gtk.ListStore(str)
+        column = Gtk.TreeViewColumn(title)
+        name   = Gtk.CellRendererText()
+        selec  = grid.get_selection()
+
+        grid.set_model(store)
+        selec.set_mode(2)
+
+        column.pack_start(name, True)
+        column.add_attribute(name, "text", 0)
+        column.set_expand(False)
+
+        grid.append_column(column)
+        grid.set_search_column(0)
+        grid.set_headers_visible(True)
+        grid.set_enable_tree_lines(False)
+
+        grid.show_all()
+        scroll.add(grid)
+        grid.columns_autosize()
+        scroll.set_size_request(360, 240)
+        return scroll, store
+
+    def _create_listBox_widget(self,):
+        scroll   = Gtk.ScrolledWindow()
+        grid     = Gtk.ListBox()
+        viewport = Gtk.Viewport()
+
+        grid.show_all()
+        viewport.add(grid)
+        scroll.add(viewport)
+
+        scroll.set_size_request(360, 200)
+        return scroll, grid